CVE-2026-93399 (GCVE-0-2026-93399)

Vulnerability from cvelistv5 – Published: 2026-09-25 06:39 – Updated: 2026-09-25 06:39
VLAI
Title
Online Scheduling and Appointment Booking System <= 28.2 - Insecure Direct Object Reference to Unauthenticated Arbitrary Booking Token Disclosure and Deletion via 'order_id' Parameter
Summary
The Bookly plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to, and including, 28.2 via the 'bookly_get_form_id', 'bookly_render_complete', 'bookly_add_to_calendar' and 'bookly_rollback_order' AJAX actions. This is due to the 'bookly_get_form_id' handler blindly storing the attacker-controlled 'order_id' from the submitted form_data into a new booking session, which the 'bookly_render_complete' handler then trusts to look up and return the corresponding Order's secret token without verifying that the current session created that order. This makes it possible for unauthenticated attackers to enumerate sequential order IDs, disclose other customers' order tokens, retrieve calendar/appointment information via 'bookly_add_to_calendar' and permanently delete arbitrary non-completed bookings via 'bookly_rollback_order', which cascade-deletes the customer_appointment and (when no other customers are attached) the underlying appointment.
Severity
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version CPE status
ladela Online Scheduling and Appointment Booking System – Bookly Affected: 0 , ≤ 28.2 (semver)
guessed Create a notification for this product.
Credits
Theklis
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Online Scheduling and Appointment Booking System \u2013 Bookly",
          "vendor": "ladela",
          "versions": [
            {
              "lessThanOrEqual": "28.2",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Theklis"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The Bookly plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to, and including, 28.2 via the \u0027bookly_get_form_id\u0027, \u0027bookly_render_complete\u0027, \u0027bookly_add_to_calendar\u0027 and \u0027bookly_rollback_order\u0027 AJAX actions. This is due to the \u0027bookly_get_form_id\u0027 handler blindly storing the attacker-controlled \u0027order_id\u0027 from the submitted form_data into a new booking session, which the \u0027bookly_render_complete\u0027 handler then trusts to look up and return the corresponding Order\u0027s secret token without verifying that the current session created that order. This makes it possible for unauthenticated attackers to enumerate sequential order IDs, disclose other customers\u0027 order tokens, retrieve calendar/appointment information via \u0027bookly_add_to_calendar\u0027 and permanently delete arbitrary non-completed bookings via \u0027bookly_rollback_order\u0027, which cascade-deletes the customer_appointment and (when no other customers are attached) the underlying appointment."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 9.1,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-639",
              "description": "CWE-639 Authorization Bypass Through User-Controlled Key",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-25T06:39:55.951Z",
        "orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
        "shortName": "Wordfence"
      },
      "references": [
        {
          "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/d45a01e5-0e69-4d95-b609-b9002b3776da?source=cve"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/tags/28.2/frontend/modules/booking/Ajax.php#L733"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/tags/28.2/frontend/modules/booking/Ajax.php#L46"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/tags/28.2/frontend/modules/booking/Ajax.php#L1111"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/tags/28.2/frontend/modules/payment/Ajax.php#L74"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/tags/28.2/lib/base/Gateway.php#L301"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/tags/28.2/lib/UserBookingData.php#L360"
        },
        {
          "url": "https://plugins.trac.wordpress.org/changeset?reponame=\u0026old=3707284%40bookly-responsive-appointment-booking-tool\u0026new=3707284%40bookly-responsive-appointment-booking-tool"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-09-17T21:05:40.000Z",
          "value": "Vendor Notified"
        },
        {
          "lang": "en",
          "time": "2026-09-24T18:12:07.000Z",
          "value": "Disclosed"
        }
      ],
      "title": "Online Scheduling and Appointment Booking System \u003c= 28.2 - Insecure Direct Object Reference to Unauthenticated Arbitrary Booking Token Disclosure and Deletion via \u0027order_id\u0027 Parameter"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
    "assignerShortName": "Wordfence",
    "cveId": "CVE-2026-93399",
    "datePublished": "2026-09-25T06:39:55.951Z",
    "dateReserved": "2026-09-17T20:50:36.250Z",
    "dateUpdated": "2026-09-25T06:39:55.951Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}



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